Can you post the graphics information from about:support? And can you try if you can reproduce this problem in safe mode? ( https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode )
Sure. Here are the details you requested: Data sterownika 9-15-2014 GPU #2 Active false ID dostawcy 0x1002 ID subsystemu 30111043 ID urządzenia 0x6819 Okna ze sprzętowym przyspieszeniem grafiki 1/1 Direct3D 11 (OMTC) Opis adaptera ASUS R7 265 Series RAM adaptera 2048 Renderer WebGL Google Inc. -- ANGLE (ASUS R7 265 Series Direct3D9Ex vs_3_0 ps_3_0) Sterowniki adaptera aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Wersja sterownika 14.301.1001.0 windowLayerManagerRemote true Włączone Direct2D true Włączone DirectWrite true (6.3.9600.17415) AzureCanvasBackend direct2d AzureContentBackend direct2d AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0 I'll try to reproduce in safe mode. I had never experienced this before. I always did use Adblock Plus, Ghostery and DownloadHelper. For a few months now I am also using addon called PrivacyBadger. I never had any problems with the former ones, hence I suspect that if this is an issue caused by addon - it will be PrivacyBadger fault.
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